Compression Drivers/Horn Drivers

[DMX Will]

Ok,

Ordered the upgrade to my Class-D Tops, to make them compression drivers.

I know pretty much nout about the complicated things regarding speakers, so advice is very much required.

On the back of the new attatchments for the horn, it states "Horn Driver" now does this mean I've been sent the wrong thing if I ordered Compression drivers? Is there a difference? Very confused, and don't want to ring up and shout, if I'm wrong.

Cheers guys,

[Paul James Promotions]

Any chance of a picture of the units? Should be able to tell from that.

[DMX Will]

http://www.discoworld.dk/shop/product_info.php?cPath=302_310&products_id=6386

[Paul James Promotions]

Anything with a voice coil that small and crossover frequency that high is a tweeter rather than a true compression driver.

[TonyB]

I somehow doubt if what you have bought will be an improvement over what you have.

If your speaker has a piezo horn at the moment, chances are it doesn't have a crossover as piezo horns don't need them. You will need to get a crossover that matches the characteristics of the speaker and tweeter.

Before replacing the the horn, you need to know the roll off frequency of the speaker and the crossover frequency.

The item you has bought has a crossover frequency of 5000hz and a top handling frequency of 17,500hz. For full range, you need a top frequency of 20,000hz which I expect the Class D speakers already have.

If you are replacing the horn as well, you also need to ensure that it has the same depth as the existing to prevent phazing problems.

The efficiency of the driver also needs to be taken into account as a replacement can either be to loud in which case it will over emphasize the high frequencies and attenuation will be required. If it is not as efficient as the existing driver, then the highs will be too quiet.

[Paul James Promotions]

For full range, you need a top frequency of 20,000hz which I expect the Class D speakers already have.



The majority of human ears cannot detect anything over about 16 / 17k.

[TonyB]

The majority of human ears cannot detect anything over about 16 / 17k.

It drops off with age! http://hypertextbook.com/facts/2003/ChrisDAmbrose.shtml Its not until middle age that you don't hear the high frequencies so well. If you had two set ups, you would notice a difference in the higher range but it depends how much of an audiophile you are.

[DMX Will]

Thanks guys, I'm presuming the spec is A-OK for the speakers, as they are coming from Class D themselves, and they know the model number etc of my speakers, so all SHOULD be good :D